The reason(other than it being ineffective) we don't use valves like that in the plumbing trades is because mostly due to how difficult it would be to service, and build up of debris would be awful
@@davidtuchscherer6276 But does it still work at extremely high frequency? Even ultrasonic? It may still work fine in conditions where all other valves will fail. INSIGHT! With "Reynolds number," ...whenever operated at very low speeds, the fwd and rev flows should be identical, (when very slow, or also when using viscous syrup.) The Valvular Conduit requires high-inertia fluids in order to produce its little fluid jets, and to behave as a diode. (The "vortices" are in fact small fluid jets, either flowing in parallel or colliding opposite. Fluid jets are created by vortex-shedding.) If the valve converts alternating fluid flows in to "DC," does it also convert sound into constant pressures, or even convert sound into wind? Test it with incense smoke, plus music. Put it into your bathtub. Vibrate the water, or maybe play loud music, or simply yell at it. Does the Tesla Straw start swimming? Powered by fluid propulsion? . In terms of fluid jets, the Tesla Valve is a long stack of NAND gates, where two jets are aimed towards each other. They collide, producing a "logic low" of near-halted flow. But in the "good" direction, the two fluid jets are aimed in the same direction, producing a logic function AND, with a "logic high" maximum flow output.
A one-way straw would be useful if you're sharing a drink from the same cup because the valve at the end of the straw makes sure no liquid being sipped goes back into the drink.
I mean I guess that idea would be useful in that niche circumstance but that’s not how this straw works. It’s only works one way meaning if you flip the straw it won’t work, the liquid still flows in and out like any normal straw when using it the right way up.
@@KobeLoverTatum I think there are other valves which you could use that completely stops liquid from flowing back out. Also, a valve which stops all liquid from flowing back out also ensures that the drink is always at the top of the straw, so you don't spend energy sucking air before the liquid arrives. This is useful for people who have respritory challenges and have trouble sucking.
sure, but also if you actually take germ theory into consideration the negligible amount of spit shared with a regular straw is entirely unlikely to get you sick in any way.
@@KaitiKat216 *covers your mouth and pulls you aside* Hey, hey, shh, take it easy. Listen, stay quiet about this, and we'll make sure you're taken care of... *slips a dollar into your pocket*
I could see a one-way straw being useful when drinking something carbonated. When I have a regular straw in a carbonated drink, the bubbles adhere to the straw and pull it up, sometimes enough that it falls out of the cup. If there were a one-way valve, the weight of the liquid in the straw may help reduce the floatation from the bubbles, thus helping keep the straw in the drink.
"Why would you want a one way straw?" Time-efficiency, imagine all those seconds you'll save just by having the fluid ready to flow into your mouth, without it needing to climb the whole straw.
It was useful in its day, clever mechanical solutions to age old problems. Another principle of this are the viaducts the Romans built to provide clean running water to their cities way before the invention of pumps.
@@hemantbshanbhag6104 In English, we spell it "kerosene". No sweat; from your name I'm assuming that English isn't your first language. I just thought you'd want to know.
This is my favorite science channel. I must be the only subscriber that didn't know you are a doctor. You earned a doctorate in Chemical Engineering. Not many PhD's with a popular RU-vid channel. Please don't stop educating us. This is also my son's favorite science channel.
pure PLA is *technically* food safe since it's made from corn starch, but obviously many compnies put dangerous additives in. Still, you ingest tons of microplastic every day, this little test is almost nothing compared to what our body has to sustain.
Honestly just glad it exists. Who knows, a practical application could come up in the future. Just like how not all simple machines all used all the time.
When I saw this in my recommendations and saw 'one direction', I actually thought it meant something along the lines of 'you have to face north to use this straw' XD
@@Oscar-vs5yw Now I'm curious, what would be the benefit of a magnetless compass? I'm sure there has to be one but I don't know enough about magnets to think of anything. Do they interfere with electronics maybe?
@@dragonare715 its either the inventor named it himself or the inventor is known as the one inventing it so people is using the inventor name to call that certain invention.
The 'Tesla valvular conduit' was part of a larger system. He needed a flow bias; easier flow one way, more resistance the other. Part of how it worked so well in his application was the pulsing nature of the flow through the 'valve'. The pulsing leads to pressure and temperature gradients in the conduit; the heavy slab walls of the conduit acted like heat-sinks and to pre-heat incoming air. It was to be the inlet valve for a type of large pulse-jet engine... The flow bias kept pressure spikes in the combustion chamber while allowing smoothly flowing inlet air. The comprehensibility of air makes a sort of spring to absorb the 'bumps'. ... That is one aspect of how Tesla worked; the final use of any one part was not always apparent. His infamous 'death ray machine' was never presented all at once; he left a trail of bread-crumbs throughout the US patent system.
It wasn't even really 5 second more, when he did it the right way he flipped it and started the clock so its already gonna be a second behind then he stopped it as soon at it left the syringe but not the straw as shown by water still coming out, he stopped the timer at 11 and said "10". Then for when he flipped it the wrong way he flipped it then started the timer, same thing he did to the first one, but this time he waited for all the water to be gone from the straw before stopping it. idk, I get the experiment but like I get that its gonna be slower but come on what you do to one side you need to do to the other to make it a fair test, might just be and I easily could just be blind as a bat and he may have stopped it after the water left the straw in the first one but from my perspective its not also I need to get a life just typed out this whole thing about something I could easily be wrong about just cuz.
From your explanation, it makes sense that it is made for higher frequencies since the turbulence will peak when the state changes. Once you reach a permanent regime the turbulence will be much lower and yhe fluid will ho through much more easily. Both the shape and the principles remind me very much of a coil in the electrical field.
6:00 I have that exact check valve for my fish tank aerator. We added that valve after the tank decided, one night, to empty itself all on the floor and eventually leaking downstairs
Actually it turns up to be an excellent noise supressor . I found that being a kid in the 80's when i visited the military ship where my father was chief engineer. The romanian military ships on the Danube had that on the engine's exhaust, it was made in pairs of loops,so the tipical diesel engine noise was silenced. At the exhaust tube could be seen smoke coming out in uniform flow but without the noise.
it would be a good concept for a fluid pump (for water)working much like a check valve does,but as a straw it would be very hard to clean and get bacteria out.
Not sure if you mentioned this in the video, you could use a tesla valve to regulate how much fluid flows by slowing it down based upon the number of loops. Just a thought?
@The Action Lab - The time taken would be more than 15 seconds on the wrong side if you had the straw on the top of the container. By having the opening of the container at the bottom will ensure that the liquid in the container seeks its own level on the straw as well so that by the time you flip the straw down, its already half filled thus making the water flow easier. if you still want to keep the opening of the water container downwards, the tube connecting to the straw needs to be longer so that you can hold the one way straw higher than the container so that the liquid does not get into the straw initially making your experiment accurate to measure the actual time taken for the liquids to pass through the straw on both sides.
I think the sharpnes of edge inside and quality of tesla's valve are important. Second topic it's speed of fluid (gas it's also a fluid) if you use it as dynamic part for example in rocket engine as fuel pipe or other it can be ok. Also in (as you said in video) in changeable flow with high freq. changes. This valve can also work as some kind of pump (or part of the pump).
how forgiving is a Tesla valve in terms of how much its performance suffers if it isn't made exactly right? is there an optimal loop shape / position & angle for the loop to reconnect with the main stream to cause the most turbulence / resistance? do these things depend on what is supposed to be flowing through the valve?
a one way straw is used in the water pack that hikers and military use, it keeps water in the straw right away, but also keeps it from leaking by using it with another one way valve
Had come here just to comment on the title ;) Because the purpose of Tesla valve is to allow flow in one direction only, it actually perform correctly in both directions when it allows flow in one direction and not in the other. So it works both ways as intended. Now watch the video to see if I was right or not. ;)
3, 2, 1...okay, done - 10 seconds it took ready, set go... it's "a lot slower" - 15 seconds yeah not much of a valve, 50% decrease with just the force of gravity
I work in a care home, we use one way straws to help clients who struggle to drink from a cup because of their dementia and don't have the suction to use a regular straw
"who would want a one way straw?" who wouldn't? imagine that: you suck a liquid on a normal stral, you take it out of your mouth, but that liquid that already touched your mouth and got contaminated goes back and contaminates the rest of the drink. Aka, you can't hand the drink over to a frriend. with a one way straw that problem does not exists.
This guy is way cool, like he is obviously very educated and can grasp many obscure topics, but unlike some other youtube science channels, he doesn't act like he needs to show people how smart he is, instead its like he wants to help others to also get excited and learn, which I think is pretty cool
When you stop drinking, a small portion of what you had in mouth (really small) goes back. This straw has reservoir in its first 5% of size, where it still keeps the water that was near the end when you been drinking. For this purpose, it is nearly same non-hygienic as normal straw, if not the same.
I suspect that you may be able to make a more effective tesla valve with some refinement on your manufacturing of the straw version. Still nice that you were able to measure an increase in resistance with a relatively crude one!
